US PATENT SUBCLASS 123 / 190.12
.~.~ Sleeve

Current as of: June, 1999
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123 /   HD   INTERNAL-COMBUSTION ENGINES

188.1  DF  VALVE {10}
190.1  DF  .~ Rotary {7}
190.12.~.~ Sleeve {1}
190.13  DF  .~.~.~> With lubrication means

DEFINITION

Classification: 123/190.12

Sleeve:

(under subclass 190.1) Apparatus wherein the rotary valve comprises a thin cylindrical sheet which rotates on an axis which is the same axis as the central axis of the cylinder.